Using automated glycan assembly (AGA) for the practical synthesis of heparan sulfate oligosaccharide precursors

Herein we report synthesis of complex heparan sulfate oligosaccharide precursors by automated glycan assembly using disaccharide donor building blocks. Rapid access to a hexasaccharide was achieved through iterative solid phase glycosylations on a photolabile resin using Glyconeer (TM), an automated oligosaccharide synthesiser, followed by photochemical cleavage and glycan purification using simple flash column chromatography.